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In the following questions, a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct answer out of the following choices.
(a) Assertion and Reason both are correct statements and Reason is the correct explanation for Assertion.
(b) Assertion and Reason both are correct statements but Reason is not the correct explanation for Assertion.
(c) Assertion is correct but Reason is wrong.
(d) Assertion is wrong but Reason is correct.

Assertion (A): The total number of atoms present in a simple cubic unit cell is one.
Reason (R): Simple cubic unit cell has atoms at its comers, each of which is shared between eight adjacent unit cells.

Answers (1)

The answer is the option (a) (a) Assertion and Reason both are correct statements and Reason is the correct explanation for Assertion.
 In simple cubic unit cell since only corners are occupied by atoms, the total number of atoms is Z =\frac{1}{8} \times 8 =1 and Simple cubic unit cell has atoms at its comers, each of which is shared between eight adjacent unit cells.

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